Factoriser et reduire les expressions suivantes A=(x+4) (x-6) + (x-1) (x-6)= B=(2x+1) (6x+1) - (2x+1) (2x-7)= C=(3x-1)* - (x+2) (3x-1)= *= au carre x = la let

bonjour

A = ( x -6) ( x +4 + x - 1)
a = ( x-6 ) ( 2 x + 3)

B = ( 2 x +1) ( 6 x +1 - 2x + 7)
B = ( 2 x +1) ( 4 x + 8)

c = (3 x -1)²- ( x +2) ( 3 x -1)
C = ( 3 x - 1) ( 3 x - 1 - x - 2)
C = ( 3 x -1) ( 2 x - 3)